The idea is to use a plastic pipe that allows water vapor to pass through but keeps other stuff inside the pipe – things like salt or biologic...

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The idea is to use a plastic pipe that allows water vapor to pass through but keeps other stuff inside the pipe – things like salt or biologic wastes. The applications therefore become irrigation using salt water and concentration of waste water into bio-solids. I can’t speak to practicality but the idea is super. http://www.takepart.com/article/2014/12/05/why-special-kind-plastic-pipe-could-be-solution-californias-water-woes